US6168889B1ExpiredUtility

Battery electrolytes and batteries

46
Assignee: MICRON TECHNOLOGY INCPriority: Dec 10, 1998Filed: Dec 10, 1998Granted: Jan 2, 2001
Est. expiryDec 10, 2018(expired)· nominal 20-yr term from priority
Inventors:Eric R. DixWeihong Li
H01M 50/109H01M 2300/004H01M 10/0569H01M 10/052H01M 10/0568H01M 2300/0025H01M 4/5835H01M 4/525Y02E60/10
46
PatentIndex Score
16
Cited by
5
References
23
Claims

Abstract

The invention encompasses battery electrolytes and batteries. In one aspect, the invention encompasses a battery electrolyte which includes the lithium salts, LiN(CF 3 SO 2 ) 2 , and LiCF 3 SO 3 in a solvent blend comprising ethylene carbonate, propylene carbonate, and 1,2-dimethoxyethane. In another aspect, the invention encompasses a battery. The battery includes a first electrode, a second electrode, and an electrolyte between the first and second electrodes. The electrolyte comprises these lithium salts in a solvent blend comprising ethylene carbonate, propylene carbonate, and 1,2-dimethoxyethane. In yet another aspect, the invention encompasses another embodiment of a battery. The battery includes a cathode comprising at least one of MnO 2 and (CF) x , and an anode comprising lithium. The battery further includes a non-aqueous electrolyte between the cathode and the anode. The non-aqueous electrolyte comprises the lithium salts in a solvent blend comprising ethylene carbonate, propylene carbonate, and 1,2-dimethoxyethane. The lithium salts comprise a mixture of LiN(CF 3 SO 2 ) 2 , and LiCF 3 SO 3 .

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
       1. A battery electrolyte comprising lithium salts in a solvent blend comprising ethylene carbonate, propylene carbonate, and 1,2-dimethoxyethane; the lithium salts consisting essentially of LiN(CF 3 SO 2 ) 2  and LiCF 3 SO 3 . 
     
     
       2. The battery electrolyte of claim  1  further being non-aqueous. 
     
     
       3. The battery electrolyte of claim  1  wherein the solvent blend consists essentially of ethylene carbonate, propylene carbonate, and 1,2-dimethoxyethane. 
     
     
       4. The battery electrolyte of claim  1  further comprising from 0.5M to 2M of the lithium salts; from 12.5% to 25% of the ethylene carbonate; from 12.5% to 25% of the propylene carbonate; and from 50% to 77% of the 1,2-dimethoxyethane; wherein the percentages are by weight. 
     
     
       5. The battery electrolyte of claim  1  further comprising from 0.5M to 2M of the lithium salts; from 12.5% to 25% of the ethylene carbonate; from 7.5% to 25% of the propylene carbonate; from 25% to 70% of the 1,2-dimethoxyethane; and further comprises from 25% to 70% of 2-methyltetrahydrofuran; wherein the percentages are by weight. 
     
     
       6. The battery electrolyte of claim  1  further comprising: 
       about 0.7M of the LiN(CF 3 SO 2 ) 2 ;  
       about 0.3M of the LiCF 3 SO 3 ;  
       about 25% of the ethylene carbonate;  
       about 25% of the propylene carbonate; and  
       about 50% of the 1,2-dimethoxyethane; wherein the percentages are by weight.  
     
     
       7. A battery comprising: 
       a first electrode;  
       a second electrode; and  
       an electrolyte between the first and second electrodes; the electrolyte comprising lithium salts in a solvent blend comprising ethylene carbonate, propylene carbonate, and 1,2-dimethoxyethane; the lithium salts consisting essentially of LiN(CF 3 SO 2 ) 2  and LiCF 3 SO 3 .  
     
     
       8. The battery of claim  7  having a thickness of less than or equal to about 1 millimeter. 
     
     
       9. The battery of claim  7  wherein the solvent blend consists essentially of ethylene carbonate, propylene carbonate, and 1,2-dimethoxyethane. 
     
     
       10. The battery of claim  7  further comprising from 0.5M to 2M of the lithium salts; from 12.5% to 25% of the ethylene carbonate; from 12.5% to 25% of the propylene carbonate; and from 50% to 77% of the 1,2-dimethoxyethane; wherein the percentages are by weight. 
     
     
       11. The battery of claim  7  further comprising from 0.5M to 2M of the lithium salts; from 12.5% to 25% of the ethylene carbonate; from 7.5% to 25% of the propylene carbonate; from 25% to 70% of the 1,2-dimethoxyethane; and further comprises from 25% to 70% of 2-methyltetrahydrofuran; wherein the percentages are by weight. 
     
     
       12. The battery of claim  7  further comprising: 
       about 0.7M of the LiN(CF 3 SO 2 ) 2 ;  
       about 0.3M of the LiCF 3 SO 3 ;  
       about 25% of the ethylene carbonate;  
       about 25% of the propylene carbonate; and  
       about 50% of the 1,2-dimethoxyethane; wherein the percentages are by weight.  
     
     
       13. The battery of claim  7  wherein one of the electrodes comprises lithium. 
     
     
       14. The battery of claim  7  wherein the first electrode is a cathode comprising at least one of MnO 2  and (CF) x . 
     
     
       15. The battery of claim  7  wherein the second electrode is an anode comprising lithium. 
     
     
       16. The battery of claim  7  wherein the first electrode is a cathode comprising at least one of MnO 2  and (CF) x  and the second electrode is an anode comprising lithium. 
     
     
       17. A battery comprising: 
       a cathode comprising at least one of MnO 2  and (CF) x ;  
       an anode comprising lithium; and  
       a non-aqueous electrolyte between the cathode and the anode; the non-aqueous aqueous electrolyte comprising a mixture of lithium salts consisting essentially of LiN(CF 3 SO 2 ) 2  and LiCF 3 SO 3 , the lithium salts being in a solvent blend comprising ethylene carbonate, propylene carbonate, and 1,2-dimethoxyethane.  
     
     
       18. The battery of claim  17  having a thickness of less than or equal to about 1 millimeter. 
     
     
       19. The battery of claim  17  wherein the solvent blend consists essentially of ethylene carbonate, propylene carbonate, and 1,2-dimethoxyethane. 
     
     
       20. The battery of claim  17  wherein the anode consists essentially of lithium. 
     
     
       21. The battery of claim  17  further comprising from 0.5M to 2M of the lithium salts; from 12.5% to 25% of the ethylene carbonate; from 12.5% to 25% of the propylene carbonate; and from 50% to 77% of the 1,2-dimethoxyethane; wherein the percentages are by weight. 
     
     
       22. The battery of claim  17  further comprising from 0.5M to 2M of the lithium salts; from 12.5% to 25% of the ethylene carbonate; from 7.5% to 25% of the propylene carbonate; from 25% to 70% of the 1,2-dimethoxyethane; and further comprises from 25% to 70% of 2-methyltetrahydrofuran; wherein the percentages are by weight. 
     
     
       23. The battery of claim  17  the battery electrolyte further comprising: 
       about 0.7M of the LiN(CF 3 SO 2 ) 2 ;  
       about 0.3M of the LiCF 3 SO 3 ;  
       about 25% of the ethylene carbonate;  
       about 25% of the propylene carbonate; and  
       about 50% of the 1,2-dimethoxyethane; wherein the percentages are by weight.

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